title: Diffusion-in-gel enzyme linked immunosorbent assay (DIG-ELISA) for detection of antibodies to Yersinia enterocolitica O:3.
abstract: The Diffusion-In-Gel Enzyme Linked Immunosorbent Assay (DIG-ELISA) is a new and simple method for the quantitation of antibodies to diffuse from wells in gel in petri dishes and absorb to an antigen coated to the plastic surface prior to testing. The antigen-antibody reaction is visualized with horseradish-peroxidase conjugated class-specific anti-immunoglobulins. The DIG-ELISA permits detection of 0.1 microns/ml of specific antibodies. This method was used to determine the IgG, IgA and IgM antibody levels to Yersinia enterocolitica O:3 in sera from patients with antibody titres to this microorganism, as determined by direct agglutination and complement-fixation test. The DIG-ELISA IgG antibody values, in contrast to IgA and IgM, correlated well to titres obtained by the direct agglutination method. Low degrees of correlations were found for all three immunoglobulin classes when compared to the complement fixation test.
mesh_terms: D000907:Antibodies, Bacterial / Q000032:analysis*; D000937:Antigen-Antibody Reactions; D000942:Antigens, Bacterial / Q000276:immunology; D003168:Complement Fixation Tests; D004797:Enzyme-Linked Immunosorbent Assay; D006801:Humans; D005779:Immunodiffusion / Q000379:methods; D007070:Immunoglobulin A / Q000032:analysis; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D015007:Yersinia / Q000276:immunology*
chemical_list: D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M